© National Instruments Corporation 2-1 GPIB-100A User Manual
Chapter 2Installation

Inspection

Inspect the shipping container and contents for evidence of physical damage or stress. If damage
is discovered and appears to have been caused in shipment, file a claim with the carrier. If the
equipment is damaged, do not attempt to operate it before contacting National Instruments for
instructions. Retain the shipping material for possible inspection by carrier or reshipment of the
equipment.

Power Connection

The GPIB-100A Bus Extender is shipped from the factory set at a certain operating voltage, either
110 VAC or 220 VAC. Verify that the voltage you are using is the same as that selected on the
rear panel of the GPIB-100A. Operating at a voltage other than the one selected may damage the
unit. If the GPIB-100A is set at a voltage other than the one you are using, follow the steps below
to change the operating voltage.
1. Remove the power cord from the unit.
2. Pull out the fuse holder and replace the fuse with one that has the type and rating specified in
Table 1-4 for your operating voltage.
3. Using a small flat-head screwdriver, rotate the voltage selector to point to your operating
voltage.
Figure 2-1. Voltage Selection